Aqueous foaming cleansing compositions comprising n-acyl salts of polycarboxlic acids and plant microfibers

Abstract

The invention provides liquid cleansing composition comprising having mild surfactant, specifically salts of N-acyl polycarboxylic acid where pH of composition is preferably 6.5 and below. By combining with particular defibrillated cell wall materials, the mild surfactants can be structured and also have surprisingly good foam stability.

1 . A cleansing composition comprising:
 1) 0.5 to 35% by wt. of total composition of a surfactant system which contains:
 a) 0.5 to 25% by wt. of total composition anionic surfactant and 
 b) 0 to 20% by wt. of a co-surfactant selected from the group consisting of non-ionic surfactant, cationic surfactant, amphoteric surfactant and mixtures thereof; where an N-acyl salt of polycarboxylic acid is present at a level of 50% or more of all surfactant (both (a) and (b)); or is present at a level of 50% or more of anionic surfactant (a); 
   2) 0 to 30% by wt. of a hair or skin benefit agent;   3) 0.05 to 4.0 wt. % of a primary cell wall material comprising microfibers wherein:
 a) the primary cell wall material is sourced from plant pararchymal tissue; 
 b) 80% or more (80% to 100% or 85% to 100%) of the microfibrils have a diameter of less than 50 nanometers (nm); and 
   4) balance of water   wherein the primary cell wall material is defibrillated.   
     
     
         2 . A composition according to  claim 1  having homogeneity parameter (CHP) of 0.030 and greater, according to the protocol as defined herein. 
     
     
         3 . (canceled) 
     
     
         4 . A composition according to  claim 1 , wherein the cell wall material has a fiber homogeneity parameter (FHP) of 0.030 and greater, according to the protocol as defined herein. 
     
     
         5 . A composition according to  claim 1 , wherein the cell wall has a fiber defibrillation parameter (FDP) of 0.10 Hz or greater, according to the protocol as defined herein. 
     
     
         6 . A composition according to  claim 1 , wherein the salt of polycarboxylic acid is a salt of dicarboxylic acid. 
     
     
         7 . A composition according to  claim 6 , wherein the salt of dicarboxylic acid is a salt of glutamate. 
     
     
         8 . A composition according to  claim 7 , wherein pH of the composition is 3 to 6.5.